55256319 has 6 divisors (see below), whose sum is σ = 79814696. Its totient is φ = 36837540.

The previous prime is 55256317. The next prime is 55256329. The reversal of 55256319 is 91365255.

It is not a de Polignac number, because 55256319 - 2¹ = 55256317 is a prime.

It is a super-2 number, since 2×55256319² = 6106521578859522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55256317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3069787 + ... + 3069804.

Almost surely, 2^55256319 is an apocalyptic number.

55256319 is a deficient number, since it is larger than the sum of its proper divisors (24558377).

55256319 is a wasteful number, since it uses less digits than its factorization.

55256319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139597 (or 6139594 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 55256319 is about 7433.4594234448. The cubic root of 55256319 is about 380.8850997893.

The spelling of 55256319 in words is "fifty-five million, two hundred fifty-six thousand, three hundred nineteen".